High Efficiency Furnace You Can Buy

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What is the best forced-air heater to purchase? This specialist, unbiased heater buying guide will help you select between the major brands to find the right heating unit for your home and spending plan.
Is it time for you to purchase a new high-efficiency forced-air heater? Sky-high energy costs, lessening resources, and ecological issues have brought a good deal of attention to the topic of home energy efficiency in recent years– particularly when it pertains to heating. Homeowners are having a hard time to invest less, use less, and contaminate less without giving up the warmth and convenience they’ve pertained to treasure.

If your old furnace has stopped working completely, it’s certainly time for a brand-new, high-efficiency heater. But, even if your old heating system seems to work okay, it might be time to consider changing it with a more efficient design– to save money over the long run and take pleasure in more comfort and peaceful now.

The effectiveness of your heating system can make a significant difference in your energy bills. According to the United States Department of Energy (DOE), cooling and heating represent roughly 56 percent of the energy used in a typical U.S. home (the part for heating has to do with 30 percent). Certainly, if you can squeeze more effectiveness out of your heating and cooling equipment, you can make a major dent in your regular monthly energy expenses. If you mean to stay in your home for a few years, updating from an old, inefficient furnace to a new, high-efficiency model can pay for itself and improve your comfort.

An obsolete heating system can be really pricey

If your heater was set up prior to 1992, it is probably obsolete. In an effort to curb energy waste and pollution, the U.S. Department of Energy (DOE) set up requirements for makers at the beginning of 1992 that needed every brand-new heating system to turn at least 78 percent of its fuel into heat. On May 1, 2013, these minimums rose to 80 percent. All brand-new models offered must satisfy or surpass this; effectiveness climb up as high as 98.5 percent with the best models.

Goodman GMH80803BN Gas Furnace
Goodman GMH80803BN Gas Furnace

So, if your gas or oil-burning heater was installed prior to 1992, you’re most likely sending 30 percent or more of your energy dollars up the heating system flue, and, by the way, pumping up to 4 lots of co2, the “greenhouse gas,” into the environment each year. In reality, if you have an older forced-air furnace operating at very low performances, it most likely produces about half the heat it could be providing on the same amount of fuel.

Determining your heating system’s age

Attempt to get a fix on how old your heating system is. Open the cabinet and try to find dates. Jot down the design number and try browsing it on the Internet. If you can’t find the approximate date of manufacture, you’ve probably answered the question with a resounding “time to change.”

If your heating system has a standing pilot burner instead of electronic ignition, consider this to be another sign that it is an energy waster.

Making a heating system purchasing decision

Many heating systems offered in the United States are made by a handful of major producers consisting of Lennox, Trane, and Carrier (which also makes Day and Night and Bryant). In the following posts, we’ll help you arrange through the brands, designs, features, jargon, warranties, costs, and so forth to relieve your decision-making.

The biggest distinctions between the most costly and least pricey models come down to energy efficiency, comfort, and guarantees. Now we’ll take a better take a look at these elements.

How Furnace Efficiency Is Measured

Goodman GMH80804BN Gas Furnace
Goodman GMH80804BN Gas Furnace

A furnace uses energy to produce and deliver heat. The more heat it can deliver with a provided amount of energy, the better: This is the essence of “performance.” Furnace makers aim to produce home appliances that both burn fuel effectively and require very little energy (generally electricity) to run the blowers that distribute the heat to your home.

Heating system fuel efficiency rankings

The measurement for furnace fuel efficiency is called an Annual Fuel Utilization Efficiency (AFUE) rating. All new heating systems are posted with this rating, normally through a yellow “EnergyGuide” label that’s needed by the Federal Trade Commission (FTC). Yellow EnergyGuide labels list approximated yearly operating costs for furnaces under specific conditions; these are indicated for comparison shopping only.

AFUE ratings range from the 80 percent minimum to 98.5 percent. The significance of this percentage is really easy: This is the ratio of the furnace’s yearly nonrenewable fuel source that is transformed into usable heat. To puts it simply, the highest-performing model transforms 98.5 percent of its fuel into heat.

Saving energy dollars

Another way to think about this is to think about that 98.2 cents out of every dollar spent for energy to heat your home is converted to heat. With a lower performing model, 20 cents or more of every dollar is squandered. Those dollars can accumulate in a rush at today’s energy rates. (The AFUE rating does not consider the loss of heat that occurs in the duct work delivery system; this loss can be as high as 35 percent with attic duct work.)

High performance or not?

Though many makers call their furnaces “high effectiveness,” the DOE just describes units with an AFUE higher than 90 percent as “high effectiveness” and models with an 80 percent to 83 percent AFUE as “mid performance.” As minimums increase, these descriptions become even less meaningful. Simply pay attention to the portion. And be aware that, relying on where you live, it might not be worth it to invest the big dollars for the highest efficiency system readily available. Though these units typically make sense in cold climates, the cost savings might not pencil out if you reside in a mild-winter climate.

Future minimum AFUE requirements for furnaces will be even tighter, and they’ll be tailored to the type of fuel used and whether the system is “weatherized” (developed for outdoor setup) or “non-weatherized” (meant just for installation inside your home). Furnaces created particularly for use in a mobile home will have somewhat lower minimums. Where they are set up will likewise affect the regulations: All non-weatherized heating systems installed in the northern United States should have at least a 90 percent AFUE.

Electric forced-air heating system efficiency

An electrical heater or boiler doesn’t lose heat up its flue due to the fact that it does not have a flue. For this factor, it usually will have an AFUE in the 95 percent to 100 percent range. That’s excellent, nevertheless, the issue with an electric furnace is that electrical power is a far more pricey fuel source than the nonrenewable fuel sources, so an electric heater seldom makes financial sense. If you want to rely on electrical power as a fuel source for heating, a better alternative is a heat pump.

Energy-Saving Furnace Features

The combustion side of furnaces– the blending of combustion air with fuel– is an area where technological advances have enhanced energy effectiveness. High-efficiency heating systems keep close control over the quantity of air mixed with gas and vary the speed of the blower motor relying on the needs of the home. “Sealed combustion,” which suggests bringing all combustion air from outdoors and blending it with the fuel at a regulated rate, takes full advantage of heat from the fuel.

Two-stage heating system gas valves & motors

Gas valves have become more advanced, too. A two-stage gas valve warms up the heater quickly and then hangs back to a more economical flow. Many gas-fired, high-efficiency furnaces likewise save money on the electrical energy required to power the blower motor, though this cost savings is not factored into the AFUE ranking. They do this by coupling an advanced, programmable thermostat to a variable-speed motor. Unlike a traditional system– where the heater goes on, blows hot air into the house at full blast for a few minutes, then shuts off– a variable-speed, or “variable-capacity,” system runs the blower for longer periods at lower speeds. It offers quieter and more even and comfortable heat and does not consume electrical energy needlessly.

Electronic pilot & condensing gas heaters

During the past few years, producers have used a number of developments to improve performance. One early development was the relocation from the standing pilot light, which burns gas even when the heater is inactive, to electronic stimulate ignition, which fires the furnace as needed. The higher-efficiency models are called “condensing gas heaters.” They run exhaust gases through a second heat exchanger to extract and use readily available heat that’s otherwise exhausted. These models pull out nearly all of the heat, sending cool exhaust out and leaving behind condensed water. This condensate, 5 to 6 gallons each day, is drained or pumped away by a condensate pump connected to the device. A key feature to search for when purchasing a condensing gas heating system is a long-term guarantee on the heat exchanger; the best types are built to withstand the corrosive impacts of wetness and chemical accumulation for the life of the house.

Since they draw out so much heat from a furnace’s exhaust, one bonus of condensing heating systems is that they might be vented out through a wall with inexpensive PVC pipeline, a crucial feature that saves money and the trouble of routing a flue up through the roof.

Combined effectiveness features

Goodman GMS80403AN Gas Furnace with 80% Afue
Goodman GMS80403AN Gas Furnace with 80% Afue

Heater models with the greatest performance ratings, those with an AFUE greater than 90 percent, integrate numerous developments into one package. For instance, the Lennox SLP98V, which has up to 98.2 percent AFUE, immediately changes the speed to match the heating requirements, catches maximum heat with a stainless-steel secondary heat exchanger, and can communicate smartly with a thermostat for ideal efficiency.

The Carrier Infinity ICS has up to a 95 percent AFUE; it has a condensing gas heating system with a microprocessor control panel that immediately changes the furnace output and blower speed for optimal effectiveness based on details from the thermostat. Both are top quality products worthwhile of consideration.

How Much Does a Furnace Cost?

Buying a furnace isn’t really like buying a new dishwasher. It is tough to price completing brands online or in shops due to the fact that 1) lots of furnaces are not sold online or through sellers (they are sold through HVAC dealerships or wholesalers), and 2) costs generally don’t include setup. New heating systems are often installed by HVAC professionals, so the best method to find out what a system is going to cost is to request complimentary quotes.

Situations will determine the real cost of replacing an old heater with a brand-new, high-efficiency design. If the new system can be linked to the existing duct and exhaust flue, it may range from about $3,000 to $4,500, installed, depending upon the equipment you choose.

Obviously, the greater the effectiveness, the higher the cost of the system. If you live in a mild environment, it may be overkill to obtain the most efficient model– the extra cost most likely will not be offset by energy bill cost savings (however the environment will like you). If you reside in a cold-winter environment, it’s often best to buy the greatest performance you can pay for. When buying a system, you should ask your dealer to help you figure the repayment in terms of energy cost savings.


Tagir Technical Team
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